From owner-svn-src-head@freebsd.org  Thu Jul  6 12:30:40 2017
Return-Path: <owner-svn-src-head@freebsd.org>
Delivered-To: svn-src-head@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id AE180DAC86D;
 Thu,  6 Jul 2017 12:30:40 +0000 (UTC)
 (envelope-from trasz@FreeBSD.org)
Received: from repo.freebsd.org (repo.freebsd.org
 [IPv6:2610:1c1:1:6068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 78F536A312;
 Thu,  6 Jul 2017 12:30:40 +0000 (UTC)
 (envelope-from trasz@FreeBSD.org)
Received: from repo.freebsd.org ([127.0.1.37])
 by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id v66CUdTk087823;
 Thu, 6 Jul 2017 12:30:39 GMT (envelope-from trasz@FreeBSD.org)
Received: (from trasz@localhost)
 by repo.freebsd.org (8.15.2/8.15.2/Submit) id v66CUdW6087822;
 Thu, 6 Jul 2017 12:30:39 GMT (envelope-from trasz@FreeBSD.org)
Message-Id: <201707061230.v66CUdW6087822@repo.freebsd.org>
X-Authentication-Warning: repo.freebsd.org: trasz set sender to
 trasz@FreeBSD.org using -f
From: Edward Tomasz Napierala <trasz@FreeBSD.org>
Date: Thu, 6 Jul 2017 12:30:39 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r320734 - head/sys/ddb
X-SVN-Group: head
X-SVN-Commit-Author: trasz
X-SVN-Commit-Paths: head/sys/ddb
X-SVN-Commit-Revision: 320734
X-SVN-Commit-Repository: base
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
 <svn-src-head.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head/>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/svn-src-head>,
 <mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 06 Jul 2017 12:30:40 -0000

Author: trasz
Date: Thu Jul  6 12:30:39 2017
New Revision: 320734
URL: https://svnweb.freebsd.org/changeset/base/320734

Log:
  Improve ddb(4) error reporting a bit.
  
  Obtained from:	CheriBSD
  MFC after:	2 weeks
  Sponsored by:	DARPA, AFRL

Modified:
  head/sys/ddb/db_command.c

Modified: head/sys/ddb/db_command.c
==============================================================================
--- head/sys/ddb/db_command.c	Thu Jul  6 12:27:14 2017	(r320733)
+++ head/sys/ddb/db_command.c	Thu Jul  6 12:30:39 2017	(r320734)
@@ -372,7 +372,8 @@ db_command(struct command **last_cmdp, struct command_
 	    return;
 	}
 	else if (t != tIDENT) {
-	    db_printf("?\n");
+	    db_printf("Unrecognized input; use \"help\" "
+	        "to list available commands\n");
 	    db_flush_lex();
 	    return;
 	}
@@ -643,7 +644,7 @@ db_fncall(db_expr_t dummy1, bool dummy2, db_expr_t dum
 		db_unread_token(t);
 	    }
 	    if (db_read_token() != tRPAREN) {
-		db_printf("?\n");
+	        db_printf("Mismatched parens\n");
 		db_flush_lex();
 		return;
 	    }